GIS Dictionary

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N-ary association

[programming] A UML term that describes how two classes have a relationship with one or more other classes. In an […]

NAD 1927

Acronym for North American Datum of 1927. The primary local horizontal geodetic datum and geographic coordinate system used to map

NAD 1983

Acronym for North American Datum of 1983. A geocentric datum and graphic coordinate system based on the Geodetic Reference System

nadir

1 [aerial photography] In aerial photography, the point on the ground vertically beneath the perspective center of the camera lens.

NAICS

[data structures] Acronym for North American Industry Classification System. A system for classifying individual business locations by their types of

NaN

[mathematics] Acronym for not a number.

natural breaks classification

[cartography] A method of manual data classification that seeks to partition data into classes based on natural groups in the

natural neighbors

An interpolation method for multivariate data in a Delaunay triangulation. The value for an interpolation point is estimated using weighted

navigate

[ESRI software] To interactively change the observer’s or target’s position using a tool designed for this purpose, such as the

navigation

1 [wayfinding] The combined mental and physical activities involved in traveling to a destination, often a distant or unfamiliar one.

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